Daikin BRC1C71 Engineering Data page 91

Adaptors
2. Control Mode Switch (RS1) Setting
(1) For Normal Operation by Input A
Position
2
Input B can be disregarded.
(2) For Instantaneous Operation by Input A and B
Use an instantaneous input of 400 milli-sec. or more at ON time.
Position
3
(3) Do not set the switch to position 1. This switch can be set at any time.
3. Fetching the Display Signal
Terminals W1 - W4 are non-voltage contacts used in normal operation to output operation display (W1 and W2) and
malfunction display (W3 and W4) signals.
The allowable current per contact is 10 mA - 3A.
Output conditions are indicated as shown in the following table:
When Ry1 and Ry2 are OFF
All indoor units are stopped.
C:1P127045
90
Input A
OFF → ON: Unified Operation
ON → OFF: Unified Stop
Input A
On: Unified Operation
When only Ry1 is ON
No error has occurred with the
indoor units, and at least 1 unit is
operating.
Input B
ON: Unified Stop
When only Ry2 is ON
At least 1 unit has stopped operating due to malfunction, or
a communications error has occurred between the central
remote controller and the indoor unit.
EDUS39-605
Controls